SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '144') AND (category.subclass = '223') ORDER BY date ASC, patent, type |
Total of 1 patents found where: Class is '144'; Subclass is '223';
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T / S | Patent | Date | Description | Patentee | Category | Assigned To |
1907 | ||||||
U | 840,369 | January 1, 1907 | Automatic Lathe Insulator pin threading device |
PRINGLE, George W. |
Pin | E. J. Noblett |
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